Year	per 1,000 population at risk
2000	3.88906903727705
2001	5.61214540593199
2002	3.28336219309879
2003	2.79789389830875
2004	2.75949021409682
2005	1.58209964922474
2006	2.44444781200907
2007	1.26549896201883
2008	1.54175321229898
2009	1.18661470472015
2010	1.55643766563702
2011	1.88126914924532
2012	1.24583615815063
2013	1.60468177276407
2014	2.13869838140456
2015	0.88749295320931
2016	0.766186826584609
2017	4.12791395662521
2018	1.66760755170551
2019	0.829961239209084
2020	0.758988822133699
2021	0.500401988474927
2022	0.341103298033121